SIMPL OR vs POTTER
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SIMPL OR
This app helps medical professionals evaluate residents after procedures. It collects feedback and aggregates data for faculty to track resident experience and tailor supervision. The system is designed for efficiency and provides meaningful evaluation insights.
- Procedure evaluation for residents
- Formative feedback dictation
- Aggregated resident experience data
- Faculty access to evaluation data
- Individualized teaching and supervision insights
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SIMPL: System for Improving and Measuring Procedural Learning makes it feasible to evaluate residents after every procedure they perform. The SIMPL app, used by residents and faculty, is designed from the ground up for efficiency and ease of use while still providing meaningful evaluation data. Each evaluation consists of 3 questions plus the option to dictate formative feedback. Aggregated evaluation data is accessible to faculty who can use it to see how much experience a resident has with any given procedure or with a group of procedures. This knowledge can, in turn, serve to inform a conversation with the resident prior to each operation so as to better individualize both teaching and supervision in the operating room.
POTTER
This medical tool provides an accurate and user-friendly way to calculate emergency surgery risks. It's based on a machine learning algorithm derived from extensive research.
- Emergency surgery risk calculation
- Machine learning algorithm
- User-friendly interface
- Based on published research
- Highly accurate
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POTTER is a highly accurate and user-friendly emergency surgery risk calculator developed by George Velmahos (MD, PhD), Haytham Kaafarani (MD, MPH), Dimitris Bertsimas (PhD), and Jack Dunn (PhD). This Machine Learning Algorithm is the digital manifestation of the research found in the October 2018 Annals of Surgery publication, “Surgical Risk Is Not Linear: Derivation and Validation of a Novel, User-friendly, and Machine Learning-based Predictive OpTimal Trees in Emergency Surgery Risk (POTTER) Calculator.”
Screenshots
Verdict
The clearest difference is rating: POTTER at 4.4 against SIMPL OR's 3.5. POTTER also leads on ads (none vs shown) and monetization model (free vs ad-supported). SIMPL OR's advantage is update cadence (every 2 months vs every 8 months). On price, review sentiment, ratings volume and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
POTTER holds the better App Store score, 4.4 against 3.5. Both are backed by a comparable volume of ratings — 12 and 5 respectively. Written reviews split almost evenly too, at 50% and 50% positive.
SIMPL OR ships an update every 2 months, POTTER every 8 months. The most recent releases landed on June 11, 2026 and June 1, 2026 respectively.
| Parameter | SIMPL OR | POTTER |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (12 ratings) | 4.4 (5 ratings) — better |
| Positive reviews | 50.0% of reviews | 50.0% of reviews |
| Number of ratings | 12 — better | 5 |
| Update frequency | Every 2 months — better | Every 8 months |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 10.0 — better | 11.2 |
| Further details — not scored | ||
| Size | 21 MB | 8 MB |
| Age rating | 12+ | 4+ |
| Developer | Procedural Learning and Safety Collaborative, Inc | Interpretable AI LLC |
Customer experience
SIMPL OR
POTTER
In-app purchases
SIMPL OR
No in-app purchases
POTTER
No in-app purchases
